아니면 사는게 더 싸게 먹힐까요? 

그래픽카드만 갈아 줄려고 했는데 메인보드가 호환이 안되거나 그러면 사는게 쌀듯해서요 

조언 부탁드립니다 

Computer:
Computer Type   ACPI x64-based PC
Operating System   Microsoft Windows 7 Professional
OS Service Pack   Service Pack 1
Internet Explorer   8.0.7601.17514
DirectX   DirectX 11.0
Computer Name   K-PC
User Name   k
Logon Domain   k-PC
Date / Time   2014-08-14 / 12:15
 
Motherboard:
CPU Type   QuadCore Intel Core i5 750, 2733 MHz (20 x 137)
Motherboard Name   Gigabyte GA-P55-UD3R (4 PCI, 1 PCI-E x1, 2 PCI-E x16, 4 DDR3 DIMM, Audio, Gigabit LAN)
Motherboard Chipset   Intel Ibex Peak P55, Intel Lynnfield
System Memory   8187 MB (DDR3 SDRAM)
BIOS Type   Award Modular (10/26/09)
Communication Port   Ae½A Æ÷Æ®(COM1)
Communication Port   CA¸°AI Æ÷Æ®(LPT1)
 
Display:
Video Adapter   AMD Radeon HD 5700 Series (1024 MB)
Video Adapter   AMD Radeon HD 5700 Series (1024 MB)
Video Adapter   AMD Radeon HD 5700 Series (1024 MB)
3D Accelerator   ATI Radeon HD 5770 (Juniper)
Monitor   AI¹Y PnP ¸ð´IAI [NoDB] (2118507468089)
 
Multimedia:
Audio Adapter   ATI Radeon HDMI @ ATI Juniper/Broadway - High Definition Audio Controller
Audio Adapter   Realtek ALC888/1200 @ Intel Ibex Peak PCH - High Definition Audio Controller [B-2]